A. Mustafin, I. N. Khalilov, E. V. Tal'vinskii
Oct 1, 1992
Citations
0
Influential Citations
0
Citations
Journal
Chemistry of Heterocyclic Compounds
Abstract
Aromatic Claisenamino rearrangements of N-alkenyl-2-methylindoline under the action of Lewis acids leads to 7-alkenyl-2-methylindolines in high yield. Cyclization of ortho-alkenyl compounds was effected in polyphosphoric acid (PPA) and by UV irradiation. Heating 7-(1-methyl-2-butenyl)-2-methylindoline in PPA is accompanied by 1,3-methyl shift in the alkenyl substituent with subsequent cyclization at the aromatic nucleus.